It has been noticed by HW team, that there are might be problems when PLL is being enabled with CDCLK squashing being turned on, which might result in loosing register access and/or FIFO underrun. As a workaround it has been proposed to disable CDCLK squashing right before PLL is enabled and enable squashing later, if needed. Stanislav Lisovskiy (1): drm/i915: Implement workaround for CDCLK PLL disable/enable drivers/gpu/drm/i915/display/intel_cdclk.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) -- 2.37.3